Tom Carroll graduated from Santa Fe High School in Santa Fe, Texas, in 1959. He then attended Johnson Bible College in Tennessee, and received his Divinity Degree from Texas Christian University, Brite Seminary in Fort Worth, Texas, in 1968. He was ordained a Christian Church (Disciples of Christ) minister, and soon after ordination entered military service. He was commissioned an Army chaplain, serving in Vietnam where he earned a Silver Star. During his 30-year career as an Army chaplain, he graduated from the Chaplain Officer Advance course (1977), the U.S. Army Command and General Staff College (1989), and the U.S. Army War College (1979). His last post was as Regimental Chaplain, AMEDD, at Fort Sam Houston in San Antonio, Texas. After retiring from military service in 1996, he was pastor at the Lakeway Church in Austin for several years.